The Siemens digital expansion module is designed to be used with S7-1200 PLCs. This module has 4 integrated digital transistor outputs. It has 4 MOSFET type solid-state digital outputs which can be connected in both current sinking and current sourcing configurations. This module has diagnostic indication LEDs for the status of the outputs and operation. It can be plugged directly into the CPU with a simple adjustment in the user system without much alteration to the existing design or dimensions.
SIMATIC S7-1200, Digital Output, Signal Board SB 1222, 4 digital outputs 24 V DC/200 kHz